No phase of American foreign policy in recent months has perhaps attracted more attention than the question of prohibiting or permitting the export of war materials to belligerent nations -- adapted from the introduction.

The historical pronouncement of Jefferson — freedom for private arms exports --The policy reiterated, 1814-1914 -- The world war period -- The Dominican Republic -- Mexico, 1912-1922 -- Mexico, 1924-1929 -- China -- Cuba -- Honduras and Nicaragua -- Brazil -- Observations -- Idealism, isolationism and internationalism -- The Chaco Embargo -- Arms exports and neutrality -- Regulation since 1935 -- The United States changes its mind.